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talat

Rating
1671.29 (315th)
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53,631 (1,824th)
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Title Δ
Filter dataframe to keep newest rows in R -1.41
Union of intersecting vectors in a list in R +0.66
Extracting nth value from row vector in R +2.06
how can I generate a new column with values in dependence of a matr... +0.29
Calculating correlation in data frame in R +0.15
use grep to parse column names +1.33
Replacing elements of a column in R 0.00
Sorting month chronologicaly with arrange() from dplyr 0.00
Substituting the results of a calculation +0.95
R padding time series with missing time units +2.49
Append 0 to missing observations in a dataframe. +0.54
Get the a unique median value out of list of several objects. 0.00
Looping with filter (dplyr) through multiple columns with multiple... +0.46
File name storage in a variable 0.00
How to normalise subgroups from a grouped data frame in R -0.74
R - speed up nested loops (vectorization?) with conditioning on dif... 0.00
dplyr with subgroup join +1.41
When searching for a value within a large field does it make a diff... -0.80
Group columns and sum values in R +1.29
dplyr mutate rowSums calculations or custom functions -0.04
Double for-loop operation in R (with an example) +0.87
R: Building a loop function to aggregate variables based on variabl... -0.03
R, whether all the elements of X are present in Y -0.38
Changing column names in R by name not by number +0.51
How to sum one column based on key of two other columns +0.01
R: find string of vector with as elements multiple string +2.42
Select 20 first rows per each entry -1.14
Sum up column by value and group in R +2.08
list of unique value from two columns +2.02
Removing duplicates for each ID +1.30
R: Assign string to data frame based on numerical value 0.00
Split R dataframe into several rows -1.47
make new data set which is based on number of observations by years... -0.29
R get rows based on multiple conditions - use dplyr and reshape2 -0.45
Get annual mean from months by individuals -0.02
subsetting df with repeated sequences +2.10
What is the R equivalent of SQL "SELECT * FROM table GROUP BY... -0.41
subset data based on matrix of row numbers +1.85
Converting Column names to row in R +1.05
Anonymous function with dplyr::do - using results from rle to filte... +2.46
Aggregate multiple values in a single colum r -0.73
r dplyr filter error - Column has unsupported type -1.69
patterns in a deep matrix/dataframe -1.43
Distinguishing the levels of a factor variable in R -0.50
creating a new data frame by subsetting and manipulating an existin... +2.16
matching data from one data frame to another +0.57
How to look up values in R based on row and column +1.08
How can I melt columns while keeping two together? -1.61
Can I create a POSIXct data.frame for a day, in minute units, for t... -0.00
using regex in ddply variables -0.39